Combined Drains/build over

Akka87 · 31 May 2020

Hi me again With a Few questions (the pain in the arse)

1.if the planning goes ahead for the double story extension would I need to get a build over agreement being the last serving property on the line

2.there is going to be a manhole in my extension that i would like to remove as al I can think it’s for is rodding access as it has a straight channel inside

from what Information I can find online I’m the private owner off the drains being the last serving property

my plans are to dig the drain out and change to plastic at the boundary as it’s only around 650mm deep stick a junction on the line going to a small inspection chamber. Then where the manhole pics up my internal soil stack replace this with a junction. Hopefully stick 45degree bend on the end to form rodding eye.

I’m then hoping to run aco drains along my building At dpc as her in doors wants there to Be no 150mm step down with the kids.

so basically am hoping to connect the acos to the small inspection chamber with a trapped connection And run both my downspouts from my extension and kitchen waist into them being combined or if possible get rid the inspection chamber just have the connection for the acos

I can only apologise for my poor grammar and spelling and poor drawings here’s existing and what am thinking

DevilDamo · 31 May 2020

Not knowing where you’re located or your water company’s rules and regulations but if it was Thames Water, yours is private until the last 1m of the shared boundary where it then becomes a public sewer. So you could replace the pipe with plastic up until that last 1m. Anything you do in excess of that 1m is up to you and of course Building Regulations as and when you get to that stage.

Again and under TW, you would need a BOA when you’re building over or within 3m of a public sewer. TW offer a self-certification/approval process for drains like this providing you can answer all the self-certification questions. If not, it’d require a formal agreement along with drawings and a fee.

Akka87 · 31 May 2020

It’s United Utilities I think as I’m based in Manchester so even tho I am technically the private owner I still would have to get build over agreement this is what i found off there site.

DevilDamo · 31 May 2020

You may be ok then and it does appear from the boundary line, everything to your side is your drain and in your ownership. Attached is the slightly different rules for Thames Water but UU are different.

Akka87 · 31 May 2020

If it’s a private drain would I need build over agreement I’ve tried contacting them but in current situation don’t really want to be Mivearing them

Johnny Allround · 31 May 2020

How old is your property the reason I ask is there are a lot of section 24 in the UU area, if your private it’s yours until your boundary line/ connection into UU combined network.

Akka87 · 31 May 2020

To be honest I’m not sure when They as built but when I search my post code on google this comes up tho. is a residential postcode in Higher Openshaw, Manchester. It was first introduced in February 1984.

DevilDamo · 31 May 2020

Akka87 said:
If it’s a private drain would I need build over agreement I’ve tried contacting them but in current situation don’t really want to be Mivearing them

No.

Akka87 · 31 May 2020

Cheers for your reply’s mate your a star if I knew you in person I’d definitely buy you a pint.. of your chosen drink

DevilDamo · 31 May 2020

Ha! Save it for yourself come July

Johnny Allround · 31 May 2020

That’s good. Section 24 only applies to a property built before October 1937. So you can do what you like to your drainage until the boundary line/ connection.

Londoner2 · 23 Jun 2020

General rule is if your new foundations are 3m within a sewer line then you need an agreement even though you are the last house. Best to bounce off your water co.

frutbunn · 23 Jun 2020

Based on the information provided on your drawings, this is a private drain, no building over agreement would be required and any drainage issues would be dealt with solely by building control.

Notch7 · 23 Jun 2020

Londoner2 said:
General rule is if your new foundations are 3m within a sewer line then you need an agreement even though you are the last house. Best to bounce off your water co.

I always think of a building inspector who said "it should really be called a build near agreement" -and he is right, as the 3 metre rule catches a lot of people out -there could be a 300mm lateral just the other side of the fence

frutbunn · 23 Jun 2020

Notch7 said:
I always think of a building inspector who said "it should really be called a build near agreement" -and he is right, as the 3 metre rule catches a lot of people out -there could be a 300mm lateral just the other side of the fence

I am a building Inspector and based on the drawings I wouldn't consult with the water Co on this one.

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Combined Drains/build over

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